23043195149 has 4 divisors (see below), whose sum is σ = 24815748636. Its totient is φ = 21270641664.

The previous prime is 23043195121. The next prime is 23043195163. The reversal of 23043195149 is 94159134032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9675673225 + 13367521924 = 98365^2 + 115618^2 .

It is a cyclic number.

It is not a de Polignac number, because 23043195149 - 2³² = 18748227853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23043195169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886276724 + ... + 886276749.

It is an arithmetic number, because the mean of its divisors is an integer number (6203937159).

Almost surely, 2^23043195149 is an apocalyptic number.

It is an amenable number.

23043195149 is a deficient number, since it is larger than the sum of its proper divisors (1772553487).

23043195149 is a wasteful number, since it uses less digits than its factorization.

23043195149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772553486.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 23043195149 in words is "twenty-three billion, forty-three million, one hundred ninety-five thousand, one hundred forty-nine".